“…This type of cluster induced EME of SHG has been observed in previous experiments involving deposition of surface Ðlms. 36,40,47,62 Here, this EME seems to play a role in the rising trend of the SHG data during in Fig 6 . Continued growth of these t [ t 1b islands can lead to de-tuning of both EME conditions men-tioned above. In addition, since J is proportional to the volume of the island, for very large clusters, the increased value of o J o damps the SHG signal by reducing the magnitude of…”